You can source a generic 6500k light (try to get close to 98 color rendering index) for pretty cheap at most local hardware stores. My guess is this is all what these "full spectrum lights" essentially are, re-branded and marked up.

I use 2 6500k lamps as a bias lights (reference white) when coding and also for watching movies. The light will appear a bit "blue" at first (compared to most other lights), but you will get used to it. Color temp is like you are always working outside in the midday sun, its great.

Even better, I just moved from Boston to SF, and now I have an awesome view of Golden Gate bridge, and the bay, and the rest.

When the sun is setting it is just beautiful. The whole office area is well lit by natural light. It makes me a happy person.

(Having cubes with low wall also helps alot).

In Boston, I was miserable, working in a cube with high walls, away from any window, and when you go out, it gets dark by 4:30 pm. I just had the winter blues. No wonder Bostonians are so cranky and rude. You could tell when the weather got better, people were happier and nicer.